• define a stimulus

  • define tropism

  • what are growth factors

  • why are growth factors not hormones (2 points)

  • what is IAA?

  • describe positive phototropism in a shoot:

  • describe positive gravitropism in a root:

  • define a tactic response / taxis

  • name of taxis in light stimulus

  • define a kinetic response / kinesis

  • reflex arc general steps

  • Pacinian corpuscle

  • Pacinian corpuscle at rest

  • Pacinian corpuscle when stimulated

  • type of photoreceptors + where found

  • rods